G1000701 Temperature Variation Compensation Using Adaptive Filters with RLS Algorithm in Pressure change Leakage Test

Abstract

The conventional pressure change method used in leakage tests is sensitive to the ambient temperature variation. We propose a new method using Adaptive Filter with RLS algorithm to compensate for temperature variation in pressure change leakage detection. In the proposed method, the relationship between the pressure in the target vessel and the temperature signal measured by the temperature sensor installed near the target vessel will be adaptively estimated and the temperature-dependent factor in the pressure change will be subtracted from the pressure signal. In this paper, we present the principle of the proposed method and the validity of proposed method is verified by numerical simulation.